Abstract: Designs of a tool for seating engine pistons and related methods are disclosed. For example, a tool may comprise a mount element, coupled to a support element, with at least one sleeve shaped to slide onto one or more studs on an EMD engine block. The tool may also comprise a locator element, coupled to the mount element, having a guiding ring positioned relative to the at least one sleeve. The tool may further comprise a cantilever beam pivotally coupled to the support element. The tool may additionally comprise a push rod inserted through the guiding ring and coupled to the cantilever beam, such that a pivoting motion of the cantilever beam causes a linear movement of the push rod through the guiding ring. An attachment element, located on one end of the push rod, may be adapted to attach to a piston of the EMD engine.

Abstract: A pistol grip spring compressor system including a spring lock unit, an actuator assembly, and an anvil module such that the spring lock unit secures a valve spring coil of a valve spring unit from an internal combustion engine in a fixed position relative to a frame element to permit an anvil, provided by the anvil module and positioned against a valve spring retainer of the valve spring unit, to maintain compression on the valve spring while the valve spring unit is separated from an automobile internal engine combustion block.

Abstract: A valve spring compressor of uncomplicated construction. The valve spring compressor includes a lever arm and an attaching member pivotally and releasably secured to the front end of the lever arm. The attaching member has a threaded portion and a first carrier portion attached to the threaded portion. The first carrier portion has a pair of first retaining legs extending upwardly from the top of the threaded portion that are positioned on opposite sides of the lever arm and are secured thereto. A compressing member is pivotally and releasably secured to the lever arm between its front and rear ends. The compressing member includes an inverted cup portion having a ring and a peripheral flange extending downwardly therefrom. A second carrier portion is attached to the inverted cup portion and has a pair of second retaining legs extending upwardly from the top of the threaded portion. The second retaining legs are positioned on opposite sides of the lever arm and are secured thereto.

Abstract: A tool for removal of an automotive engine valve from a cylinder head, the valve including a valve stem, valve spring, and keepers locking the spring in engagement with the valve stem. The tool compresses the valve spring to remove the keepers from the valve stem to thereby permit removal of said valve. The tool includes a working head and a shaft/handle extending up from it. The working head includes axially aligned bottom and top members separated by spacer posts. The bottom member includes an annular ring with a center aperture and an upstanding cylindrical sidewall, and magnets on the annular ring within the sidewall. The shaft/handle are connected to the top member and extend upward from the working head in axial alignment with it. Axial movement of the working head along the valve stem and against the valve spring compresses the spring to release the keepers from the valve stem for attachment to the magnets.

Abstract: The present invention is a tool for removing and installing valve springs on an internal combustion engine, said tool having a body with a pair of prongs at one end and a handle means for supplying a downward force at the other end. At the extreme end of the pair of prongs is a rotatably mounted shaft which has a centrally located bore, the axis of which is perpendicular to the axis of the shaft. The bore is positioned about a rocker arm stud or bolt corresponding to the valve spring to be worked upon. Located at the top of the bore is a flat face which engages a nut placed on a rocker arm stud or the underside of the bolt head of the rocker arm bolt. The tool is then centrally positioned over the valve stem such that the prongs engage the valve spring keeper. As a downward force is applied to the body member, the prongs compress the valve spring and allow the removal or installation of the valve spring keeper lock.

Abstract: A clamp includes an arcuated frame with a stub connected to the first end thereof and a bracket connected to the second end thereof. The second end of the frame has a passage into which a rod is movably received which has one end thereof pivotally connected to a lever and the other end thereof connected to a tube so that when operating the lever, the rod together with the tube are moved toward the stub.

Abstract: A body having a journal box slidably receives a pivot shaft therein. Too, the body has a bifurcation, and the ends of the limbs thereof have rollers mounted therein. A stub, rising from the body, receives a handle for turning the body on the pivot shaft, so that the rollered limbs can compress a valve spring. A bearing annulus, for emplacement upon the subject spring or spring assembly is also provided.

Abstract: A tool for compressing valve springs of overhead camshaft internal combustion engines in which the tool is provided with a J-shaped hook member for engaging the camshaft and utilizes the latter as a fulcrum and in which the hook member is formed with an extension for facilitating the engagement with and the removal from the camshaft.

Abstract: In association with an overhead camshaft type internal combustion engine, apparatus to simultaneously pressurize all the combustion chambers and to maintain the valves in their closed positions while removing or installing valve springs. The apparatus has an elongated tubular inlet bar closed at one end and attached at the other end to a source of pressurized air. A flat base member is attached to the cylinder head so that openings therein are aligned over spark plug openings in the cylinder head. Short tubes extend from the base member to the tubular inlet bar to pass pressurized air to the combustion. The tubular inlet bar is also useful as a fulcrum for a lever used to compress the valve springs.

Abstract: A tool for compressing valve springs including: a lever which has a spring engaging portion, a fulcrum portion spaced from the spring engaging portion and an axis which extends generally from the fulcrum portion to the spring engaging portion. A torque transmitting element is fitted to the lever and includes a torquing axis which extends transversely to the axis of the lever. The torque transmitting element is releasably engageable with an elongate shaft in order to establish axial alignment between the shaft and the torque transmitting element and enable the shaft and the torque transmitting element to rotate together. The torque transmitting element transmits to the lever rotational torque applied to the shaft, thereby pivoting the lever about the fulcrum portion to force the spring engaging portion to compress the valve spring.

Abstract: A device or tool for facilitating removal of overhead automotive valves for inspection and repair of the stem and sleeves comprising a knob operated toggle mechanism which is inserted in the opening left after removal of a spark plug. The toggle mechanism holds the valve tight against the seat on the cylinder head interior permitting removal of the overhead spring and accompanying parts. After completion, the spring and retainer are replaced, the tool removed and the spark plug replaced. This emiminates the use of compressed air for this purpose as was previously the case.

Abstract: Valve spring compressor tool for internal combustion engines having an overhead camshaft. The tool has a fulcrum bracket removably attached to the engine providing means to pivot a lever, and a lever assembly having a depressor member used to depress the valve spring and means to retain the lever in position to hold the valve spring in the depressed state.

Abstract: A valve spring compressor tool has a tubular member that screws at one end on to the rocker arm stud and has a body portion linked at the opposite end that slides down the tubular member. By pulling down on the handle of a bell crank type linkage, a position adjustable extending U-shaped finger element attached to the body portion engages the top of the adjacent valve spring and compresses the spring. An over-center feature of the linkage holds the spring in the compressed condition. The tubular member has different size threads at each end and can be inverted to fit each of the two standard size rocker arm stud threads.

Abstract: Apparatus for removing a rocker arm of a valve mechanism in an automobile engine includes an elongated open-ended tubular sleeve having a U-shaped working face at one end and a slot extending inwardly from the working face of the sleeve. The slot allows the sleeve to be slid sideways around a rocker arm to position the working face of the sleeve above a valve spring located below the rocker arm. The slot provides clearance between the sleeve and the cam shaft which activates the rocker arm. A leverage arm pivots about a transverse axis at an end of the sleeve opposite the working face. A first portion of the leverage arm extends away from one side of the transverse axis and engages the underside of a cross-bar secured to the cylinder head and extending parallel to the cam shaft. A second portion of the leverage arm extends away from an opposite side of the transverse axis.